Free Tool

Percentage Calculator

Quickly calculate percentages with three common formulas. Instant results as you type.

What is X% of Y?

Find a percentage of any number.

Percentage (%)

Of number

Result

Formula

25% × 200 = 25/100 × 200 = 50

How Percentage Calculations Work

1. Finding X% of Y

Divide the percentage by 100, then multiply by the number. For example, 25% of 200 = (25/100) x 200 = 50.

2. What Percent X is of Y

Divide the part by the whole, then multiply by 100. For example, 50 is what % of 200? (50/200) x 100 = 25%.

3. Percentage Change

Subtract the original from the new value, divide by the original, and multiply by 100. For example, from 80 to 100: ((100-80)/80) x 100 = 25% increase. This is useful when comparing rent prices between cities like Dallas and Austin.

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